Flapping Wing Actuator Assembly for Precise Multi-Axis Control
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Solution Overview
Problem
Existing wing mechanisms for flapping wing propulsion systems lack a comprehensive and efficient actuation system that allows for precise control and varied flapping motions, limiting their performance and versatility.
Innovation Solution
A wing mechanism incorporating multiple actuators with universal joints and a centralized control system to manage the flapping motion, enabling precise control and varied flapping angles through a coordinated actuation of the wing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single actuator is used to drive the wing, then the device complexity is reduced, but the control precision and flapping motion versatility are insufficient
Solution Approach 1:
The wing actuation system is segmented into multiple independent actuators (first actuator for pitch control, second actuator for roll control, third actuator for yaw control) that can be independently controlled. This segmentation allows each actuator to control a specific degree of freedom, thereby improving control precision without requiring an overly complex integrated system.
Solution Approach 2:
The patent employs universal joints that allow dynamic adjustment of connection angles between actuators and wing components. This dynamic capability enables the system to adapt to varying flight conditions and achieve versatile flapping motions while maintaining a relatively simple actuator configuration.
2Adaptability or versatility
If multiple actuators with universal joints are used, then control precision and flapping motion versatility are improved, but the device complexity increases
Solution Approach 1:
The universal joints serve multiple functions: they connect actuators to wing components, allow angular adjustment for different flight modes, and accommodate varying flapping amplitudes. This multi-functionality reduces the need for separate adjustment mechanisms, thereby improving versatility without proportionally increasing device complexity.
Solution Approach 2:
The patent employs asymmetric actuator angles relative to the median line, with each actuator positioned at a specific angle (first actuator angle, second actuator angle, third actuator angle) optimized for its control function. This asymmetric configuration allows each actuator to operate at optimal angles for its specific degree of freedom, improving overall system versatility.
3Measurement precision
If actuators are positioned at optimized angles relative to the median line, then flapping control precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The universal joints are designed to self-align and self-adjust to the optimized angles during assembly and operation. This self-service capability reduces the need for precision pre-positioning and complex alignment procedures during manufacturing, thereby improving ease of manufacture while maintaining flapping control precision.
Data Source
AI summary
A wing mechanism includes a first actuator, a second actuator, and a third actuator that all extend from a substrate and connect to the upper junction member. The wing is connected to the upper junction member. The wing has a wing base with a main spar mounted to the wing base. The wing base has a middle spar mounted to the wing base behind the main spar. The wing base has a trailing edge member mounted to the wing base behind the middle spar. The wing base has a backer spar mounted to the wing base behind the main spar.